From: Michal Hocko <mhocko@suse.cz>
Date: Fri, 20 Jan 2012 22:33:58 +0000 (-0800)
Subject: mm: __count_immobile_pages(): make sure the node is online
X-Git-Tag: v3.3-rc2~46^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=656a070629adfe23c12768e35ddf91feab469ff7;p=pandora-kernel.git

mm: __count_immobile_pages(): make sure the node is online

page_zone() requires an online node otherwise we are accessing NULL
NODE_DATA.  This is not an issue at the moment because node_zones are
located at the structure beginning but this might change in the future
so better be careful about that.

Signed-off-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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